Packing-ring.



W. T. MILLS. PACKING RING. v

APPLICATION FILED MAY 17, 1909 955,527. Patented Apr. 19,1910.

M'll a'am [Ii/lg.

UNITED STATES PATENT our-roe.

WILLIAM T. MILLS, OF CAMDEN, NEW JERSEY.

PACKING-RING.

Specification of Letters Patent. Patented Apr. .19, 1910. Application filed. May 17, 1909.

Serial No. 496,462.

To all whom it may concern:

Be it known that I, WILLIAM T. MILLS, a citizen of the United States, residing at Camden, in the county of Camden and State of New Jersey, have invented certain new and useful Improvements in Packing-Rings, of which the following is a specification.

My invention relates to improvements in packing rings, and more particularly designed for use on pump plungers or other forms of piston, the object of the-invention being to provide a simple inexpensive, durable and effectual packing, which can be readily placed in position, and most efiectually operated to prevent the passage ofwater around the plunger.

With these and other objects in view, the invention consists in certain novel features of construction, and combinations, and arrangements of parts as will be more fully hereinafter described and pointed out in the claim.

In the accompanying drawings, Figure l, is a View in cross section illustrating my improvements. Fig. 2, is a view in section on the line 22 of Fig. 1. Fig. 3, is a side view of one of the packing rings. Fig. 4c, is a view in cross section thereof. Figs. 5 and 6, are views illustrating a modification.

1 represents a sleeve, and 2 are .rings,

which are shrunk onto the sleeve 1 to form a series of annular grooves 3'to receive therein my improved packing rings 4. In each of the grooves, two of these packing rings 4 are positioned, and each ring 4: comprises two sections 43 and 4; as clearly shown in Fig. 3. These sections are in effect, a single ring with straight slits as at 5, so as to allow the sections to expandrelatively to each other. These acking rings are rounded on their inner e ges, so that when two of these rings are together within a groove 3, the inner faces or edges of the rings will be concave as clearly shown, and are pressed outwardly by means of coiled springs 6 positioned around the sleeve in the grooves 3, and owing to this concave formation of the packing rings, it will be noted thatthe spring not only serves to exert outward ressure on the rings, but also presses them aterally, orin other words toward the end walls of the grooves tov tightly bind the packing rings against said end walls, and

absolutely prevent the passage of water around the rings. The coiled springs 6'illustrated, are somewhat flattened or elliptical in cross section, but I of course, do not limit myself to the precise form of these springs. In Figs. 5 and 6, I illustrate a modification, in which a spring is employed, which is in the form of snap rings 7 which are curved on their outer faces in cross section as clearly shown, and serve the same functions as do the coiled springs 6.

Various slight changes might be made in the general form and arrangement of parts described without departing from my invention, and hence I do not restrict myself to the precise details set forth, but consider myself at liberty to make such changes and alterations as fairly fall within the spirit and scope of the claim.

Having thus described my invention what I claim as new and desire to secure .by Letters Patent is:

- In a packing ring, the combination with a sleeve having an annular groove therein, of

a device in said groove around the sleeve and rounded in cross section, a packing ring in the groove around said device and comprising two parallel members having rounded inner edges in cross section in engagement with the rounded faces of said device, each of said members comprising two half sections divided on parallel lines tangent to its inner diameter and upon opposite sides.

R. H. KRENKEL, J. A. MULHALL. 

